Smoke detector



FIG. 1 is a left side elevational view of a smoke detector, showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a right side elevational view thereof;

FIG. 4 is a side elevational view taken 90 degrees from FIG. 1;

FIG. 5 is a reduced bottom plan view thereof. 

The ornamental design for a smoke detector, as shown and described. 